# The Smoke Control Areas (Authorised Fuels) (Wales) Regulations 2019, Paragraph 65

Extent: E+W

Jewel briquettes, manufactured by Eldon Colliery Limited at Newfield Works, Bishop Auckland, County Durham, which—
(a) comprise anthracite (as to approximately 30 to 50% of the total weight), Long Beach petroleum coke (as to approximately 50 to 70% of the total weight) and a carbohydrate binder (as to the remaining weight);
(b) were manufactured from those constituents by a process involving roll-pressing and heat treatment at about 150°C;
(c) are unmarked pillow-shaped briquettes;
(d) have an average weight of 33 grams; and
(e) have a sulphur content not exceeding 1.5% of the total weight.

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Source: https://www.legislation.gov.uk/wsi/2019/50/schedule/paragraph/65 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-wales-regulations-2019/schedule/paragraph-65
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.